Serious Sam is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Year 2001!

Serious Sam Classic: The Second Encounter is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month February 2002!

Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.

Serious Sam Fusion is a central hub for several existing Serious Sam games developed by Croteam. Cool new features, engine upgrades, patches and updates will be released to existing owners for FREE!

Relive Half-Life.

The 2D side-scrolling shooter from The Behemoth is back! With your mighty blaster and a group of mysterious kids by your side, destroy the agency and reclaim your spaceship!

This Co-op Shooter , has Day and Night levels, multiple maps, players will take on 25 enemy types and numerous bosses, like Gargantuan Monsters and Minibosses every 10 days as you explore, shoot and run for your life against the onslaught of porcine monstrosities.

SUPERHOT is the smash-hit FPS where time moves only when you move. No regenerating health bars. No conveniently placed ammo drops. It's you, alone, outnumbered and outgunned. Snatch weapons from fallen enemies to shoot, slice and dodge through a truly cinematic hurricane of slow-motion bullets.

Hell has broken loose. Alone or with friends, hold back waves of demons and other fiends. Level up, combine magic and perks, choose weapons to suit your style. Rounds get harder. Only those who act fast and in sync can survive.

A three-player cooperative first-person shooter set within a mysterious federal agency under assault by otherworldly forces.

Battle for survival against endless alien hordes with your friends! From the lead for Left 4 Dead and L4D2, The Anacrusis is a 1-8 player first-person shooter. Experience intense 4 player co-op action or play as the aliens and stop your friends in Versus mode. Now with Steam Workshop support!

Thousands of aliens, giant spiders, mutant lizards, and more are on the attack - can you survive the onslaught? Crimsonland is a top-down shooter with a touch of RPG. Unlock over 30 weapons and over 50 perks from quirky to brutal. Complete the quest and show your skills in five survival modes.

An intense round-based zombie survival FPS, play solo or co-op. Shoot your way through relentless waves of vicious horrors with high-octane objectives, upgrading steampunk weapons, collecting Celtic God powers, and surviving the onslaught of the Quiet Ones.